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US 5,010,112 AGranted
Method and apparatus for improving the insulating properties of closed cell foam
AssigneeMassachusetts Institute of Technology
InventorsLeon R. Glicksman, Arlene J. Lanciani
Life of this patent
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Abstract
A filler of non-metallic, light transparent material is formed into particles or flakes and coated with opaque material and dispersed in closed cell foam to reduce overall thermal conductivity and, specifically, to reduce radiation heat transfer.
Claims7
The method of forming a closed cell, rigid foam comprising the steps of:
- (a) forming a polymer foam;
- (b) forming a non-opaque, non-metallic foam filler dispersed in said polymer foam;
- (c) coating said filler with opaque material.
A closed cell, rigid, foam insulating system comprising:
- (a) a polymer foam;
- (b) a non-opaque, non-metallic foam filler dispersed in said polymer foam;
- and
- (c) an opaque coating around said filler.
1 more element
An opaque heat insulative system comprising:
- (a) an insulative foam;
- and
- (b) flakes of natural guanine dispersed throughout said foam.
Dependencies are inferred from the claim text.